[ verb pree-fawrm; noun pree-fawrm ]
/ verb ˈpriˈfɔrm; noun ˈpriˌfɔrm /

verb (used with object)

to form beforehand.
to determine or decide beforehand: to preform an opinion.
to shape or fashion beforehand: to preform a mold.


any of various uncompleted objects of manufacture after preliminary shaping.

Origin of preform

From the Latin word praefōrmāre, dating back to 1595–1605. See pre-, form
Related formsnon·pre·formed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019